Blonska had been stripped of her heptathlon silver medal and Kim stripped of silver and bronze medals.

Under the IOC anti-doping rules for the Beijing Olympics, testing takes place from July 27 to August 24. Within that period, the IOC systematically performs tests pre and post events. After each event, the IOC systematically carries out tests on the top five athletes plus two at random.

The IOC has carried out more than 4,600 doping tests so far, with the figure expected to surpass 5,000 by the end of the games Sunday night.